Question 311349
same common denominator opperation
right off the bat you should notice theres an x+3 x-3 and those two multiplied together make x^2-9 so the common denominator is x^2-9
{{{((7x(x-3))+90-(5x(x+3)))/(x^2-9)}}}
{{{(7x^2-21x+90-5x^2+15x)/(x^2-9)}}}
{{{(2x^2-6x+90)/(x^2-9)}}}
{{{(2(x^2-3x+45))/(x^2-9)}}}